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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef FILE_SYSTEM_ABSTACTION_H
#define FILE_SYSTEM_ABSTACTION_H
#include <vector>
#include <string>
#if defined(CreateDirectory)
#undef CreateDirectory
#endif
#if defined(DeleteFile)
#undef DeleteFile
#endif
/**
* Native file-system handling abstraction.
* This contains only functions that have to implemented differently on
* different OSs.
* @note do not use this directly, but use FileSystem instead
* @see FileSystem
*/
class FileSystemAbstraction
{
public:
// almost direct wrappers to system calls
static bool MkDir(const std::string& dir);
static bool DeleteFile(const std::string& file);
/// Returns true if the file exists, and is not a directory
static bool FileExists(const std::string& file);
static bool DirExists(const std::string& dir);
/// oddly, this is non-trivial on Windows
static bool DirIsWritable(const std::string& dir);
static bool ComparePaths(const std::string& path1, const std::string& path2);
static std::string GetCwd();
static void ChDir(const std::string& dir);
/**
* Removes "./" or ".\" from the start of a path string.
*/
static std::string RemoveLocalPathPrefix(const std::string& path);
/**
* Returns true if path matches regex ...
* on windows: ^[a-zA-Z]\:[\\/]?$
* on all other systems: ^/$
*/
static bool IsFSRoot(const std::string& path);
/**
* Returns true if the supplied char is a path separator,
* that is either '\' or '/'.
*/
static bool IsPathSeparator(char aChar);
/**
* Returns true if the supplied char is a platform native path separator,
* that is '\' on windows and '/' on POSIX.
*/
static bool IsNativePathSeparator(char aChar);
/**
* Returns true if the path ends with the platform native path separator.
* That is '\' on windows and '/' on POSIX.
*/
static bool HasPathSepAtEnd(const std::string& path);
/**
* Ensures the path ends with the platform native path separator.
* Converts the empty string to ".\" or "./" respectively.
* @see #HasPathSepAtEnd()
*/
static std::string& EnsurePathSepAtEnd(std::string& path);
/// @see #EnsurePathSepAtEnd(std::string&)
static std::string EnsurePathSepAtEnd(const std::string& path);
/**
* Ensures the path does not end with the platform native path separator.
* @see #HasPathSepAtEnd()
*/
static void EnsureNoPathSepAtEnd(std::string& path);
/// @see #EnsureNoPathSepAtEnd(std::string&)
static std::string EnsureNoPathSepAtEnd(const std::string& path);
/**
* Ensures the path does not end with a path separator.
*/
static std::string StripTrailingSlashes(const std::string& path);
/**
* Returns the path to the parent of the given path element.
* @return the paths parent, including the trailing path separator,
* or "" on error
*/
static std::string GetParent(const std::string& path);
/**
* @brief get filesize
*
* @return the files size or -1, if the file does not exist. Returns
* also -1 if the file is a directory.
*/
static size_t GetFileSize(const std::string& file);
// custom functions
static bool IsReadableFile(const std::string& file);
static unsigned int GetFileModificationTime(const std::string& file);
/**
* Returns the last file modification time formatted in a sort friendly
* way, with second resolution.
* 23:58:59 30 January 1999 -> "19990130235859"
*
* @return the last file modification time as described above,
* or "" on error
*/
static std::string GetFileModificationDate(const std::string& file);
static char GetNativePathSeparator();
static bool IsAbsolutePath(const std::string& path);
static void FindFiles(std::vector<std::string>& matches, const std::string& dataDir, const std::string& dir, const std::string& regex, int flags);
};
#endif // !FILE_SYSTEM_ABSTACTION_H
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